SEM measurements are used to measure the
out-of-channel emissions relative to the in-
channel power. SEM measurements are usually
calculated for specified power bands at a
number of different offsets to the carrier
frequency. SEM measurements are often carried
out for a number of different wireless
standards.
For 3GPP, the GSP-9300 supports BS (base
station) and UE (user equipment) testing
standards for both FDD (frequency-division
duplexing) and TDD (time-division duplexing)
modes.
The GSP-9300 also supports SEM testing for
802.11b, 802.11g, 802.11n and 802.16 as well as
user defined emission mask testing
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